Recent police raids on large-scale illegal e-bike assembly operations in Ho Chi Minh City, alongside reports of students modifying their own vehicles in Dak Lak province, have sparked public concern. These incidents highlight a growing trend of e-bike modification, often referred to as “upgrading” or “tuning.” However, consumers pursuing these modifications are increasingly facing significant financial losses, receiving substandard or non-functional products after spending considerable sums – reportedly tens of millions of đồng. Authorities are cracking down on illegal assembly, but the popularity of aftermarket modifications persists, raising questions about safety and consumer protection. The trend suggests a demand for enhanced e-bike performance that is being exploited by unregulated businesses and amateur enthusiasts alike. These cases underscore the risks associated with unauthorized vehicle alterations and the potential for receiving faulty or dangerous products.